An actual refrigerator operates on the vapor-compression refrigeration cycle with refrigerant-22 as the working fluid. the refrigerant evaporates at −15°c and condenses at 40°c. the isentropic efficiency of the compressor is 83 percent. the refrigerant is superheated by 5°c at the compressor inlet and subcooled by 5°c at the exit of the condenser. the properties of r-22 in the case of actual operation are h1 = 402.49 kj/kg, h2 = 454.00 kj/kg and h3 = 243.19 kj/kg. the properties of r-22 in the case of ideal operation are h1 = 399.04 kj/kg, h2 = 440.71 kj/kg and h3 = 249.80 kj/kg. note: state 1: compressor inlet, state 2: compressor exit, state 3: condenser exit, state 4: evaporator inlet. a) the heat removed from the cooled space is (kj/kg)b) the work input is (kj/kg) c) the cop is